2. Questions Bank
  3. 11th Class
  4. Physics
  5. Thermodynamical Processes

11th Class Physics Thermodynamical Processes Question Bank Critical Thinking

  • question_answer
    In an isobaric process, the ratio of heat supplied to the system \[(dQ)\] and work done by the system \[(dW)\] for diatomic gas is                 [AFMC 2002]

    A)                 1 : 1       

    B)                 7 : 2

    C)                 7 : 5       

    D)                 5 : 7

    Correct Answer: B

    Solution :

               \[-\frac{dQ}{dW}=\frac{dQ}{dQ-dE}\]; \[dE=dW+dQ\]; \[-dW=dQ-dE\]                    \[=\frac{n{{c}_{p}}\,dT}{n{{c}_{p}}dT-n{{c}_{v}}dT}\]\[=\frac{{{c}_{p}}}{({{c}_{p}}-{{c}_{v}})}\]                                 \[=\frac{7R}{2R}\]{for diatomic of gas \[{{c}_{p}}=\frac{7R}{2}\]}


You need to login to perform this action.
You will be redirected in 3 sec spinner